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About jas0_0

  • Rank
    Junior Wammer

Personal Info

  • Location

Wigwam Info

  • Turn Table
    Linn LP12
  • Tone Arm & Cartridge
    LVX & Ortofon VMS30
  • SUT / Phono Stage
    Avid Pellar
  • Digital Source 1
    iMac + Audirvana
  • DAC
    RME ADI-2 Pro FS
  • Pre-Amp
    Croft 25R
  • Power Amp/s
    Croft 7R
  • My Speakers
    Proac Response 1SC
  • Trade Status
    I am not in the Hi-Fi trade

Recent Profile Visitors

588 profile views
  1. jas0_0

    To treat or not to treat

    Thanks @MartinC. Very good points and the reason why I added a note of caution in my previous post. You are right to raise the boost issue as I hadn’t done so. For the reasons you describe, I have erred away from any significant boosts in my setup and haven’t tried to get the frequency response anywhere as near as flat as this author. My main reason for posting this guide is that it gives a very clear step-by-step of how to perform moving mic measurements in REW and then import filters into Roon. I wouldn’t go as far with the adjustments as this author. I set the flatness target to 3Hz and end up with about 5-6 filters per channel - mostly sub-200Hz. The filters I use above this level might be inadvisable in theory, but in practise they have dramatically improved the experience of listening to my system. Though I use low Q (>3) at this level which probably helps lessen any negative effects.
  2. jas0_0

    To treat or not to treat

    You’re very welcome - I hope it works as well for you as it did for me. If you’re using Roon for EQ, I found this guide excellent. https://community.roonlabs.com/t/a-guide-how-to-do-room-correction-and-use-it-in-roon/23800 The moving microphone technique used here is really important for getting an average of higher frequencies. Also I’d really recommend measuring again after implementing EQ as I found REW’s calculations needed tweaking a bit to get rid of the major modes - though don’t go mad! Trying to get a completely flat response with loads of EQ filters is a route to horrendous sound - believe me I’ve been there and it wasn’t pretty! I’ve now got really good results with about 5-6 filters per channel from about 60-800Hz (my speakers don’t go that low). Happy to help if you get stuck with anything - let me know. J
  3. jas0_0

    To treat or not to treat

    Hi @newlash09 - just wondered if you had measured your room using REW or similar? I had a similar experience as you with my setup. Tried all sorts of things - different amps, different sources, different speakers, automatic room correction devices and rudimentary room treatment. Some of these helped (the biggest improvement came from switching from a class D to a valve power amp) but I always seemed to get harsh lower treble and a congested midrange. It drove me a bit mad. Adding big heavy curtains helped, but the problem still persisted. None of the digital room correction devices I tried corrected modes above 150Hz, so I had no real idea what was going on above that. I tried using wide-band treble shelf EQ, but that didn’t correct the problem, just made everything sound duller, with a persistent hardness to the upper mids. It was only when I measured my room with REW and a Umik mic that I found a big peak at around 750Hz. I counteracted this using parametric EQ and suddenly my system sounds right. I can now listen for hours without fatigue. The general rule of thumb is that you shouldn’t eq room modes above about 150Hz, but in my case, bending the rules has brought real improvements.
  4. I'm selling a Puresound P10 moving magnet phono stage. It's in great condition - works perfectly and sounds wonderful. Currently fitted with original valves, though these could easily be rolled for even better sonics. Supplied with power cable. It's a really well regarded stage - won a Hi Fi Critic grouptest for phono stages up to £2000. Here are some reviews: https://theaudiophileman.com/p10-phono-amplifier-pure-sound-review/ http://www.acoustic-dimension.com/puresound/Hi-Fi-news-march-2010-P10.pdf http://v2.stereotimes.com/post/puresound-p10-phono-preamplifier/ There are some light scratches to the paintwork on the top of the case, though these can only be seen in certain lights/from certain angles. There's also a tiny (0.5mm) nick in the top of the faceplate. Please see pics. I'm in Hackney, London, and collection would be ideal. Will also post anywhere in the UK if you're happy to pay shipping (probably around £10) and Paypal fees. I don't have the original box, though I do have an appropriately-sized replacement, a mountain of bubble wrap and lots of experience of sending hi fi bits around the world from eBay sales. Price: £295
  5. Hi everyone, I ordered some new plugs from Amazon, lopped off about 4 metres of unnecessary black tangle and wired them back up. Everything now looks much neater, my system still works and... I didn't kill myself! An all-round win. Thanks for all the suggestions J Before: and after...
  6. jas0_0


    I find carefully applying green marker to each lobe improves musicality considerably.
  7. Stephen Hawking RIP. A man who had the brains, though perhaps not the body, to wire a plug correctly.
  8. Thanks everyone - will just get some plugs and chop my existing cables down. Don’t know why I didn’t think of this myself... Glad I asked here!
  9. Hi all, I'm aiming to tidy up the giant spaghetti mess behind my system by getting some shorter cables. There are lots of 0.5m mains cables on Amazon and eBay and I'm not quite sure where to spend my money. Part of me says anything will do, but for peace of mind I wondered if there are any brands to choose or avoid, and any specifications I need to be aware of. Looking to spend max £10 per cable (and ideally less). Anyone have any suggestions? Thanks in advance, James
  10. jas0_0

    bluetooth - good enough..?

    I recently compared the sound from an Arcam miniBlink and a NAD disc player (I don’t know which model but it was primarily for DVDs). This was through a Rotel RA03 amp and Monitor Audio Bronze B2 speakers, so not a high end system. Playing the same track using both sources revealed to me that the comments above are correct. Bluetooth is junk. Sound via Bluetooth was thinner and less weighty, with far less instrument separation and detail, and a slightly harsh high end.
  11. jas0_0

    Speaker terminal question

    Genius. The perfect foo product - double blind testing made impossible.
  12. jas0_0

    Speaker terminal question

    It’s not the seeing... It’s the knowing that’s key.
  13. jas0_0

    Any ideas or pointers to building a media cabinet

    I’m no expert but I think powder coating should be tougher - you’re effectively adding a layer of plastic which is less prone to chipping than paint. I had my bicycle done 5 years ago and it still looks great (when I get around to cleaning it). You can also get powder coating in metallic finishes - my bike is a sort of metallic steel grey. Might be worth asking on something like a custom motorbike forum for more experienced opinions though. Hope that helps, J
  14. jas0_0


    Thanks Martin, I guess there are several ways to achieve good measurements and I use the moving microphone method, which requires pink noise and RTA. More details of this here: https://www.ohl.to/audio/downloads/MMM-moving-mic-measurement.pdf and here: https://community.roonlabs.com/t/a-guide-how-to-do-room-correction-and-use-it-in-roon/23800 Even without measurement, in my room I had experienced an upper mid mode which led to a harshness in violins and trumpets and caused an unpleasant pressure effect on the ears, leading to listening fatigue. This mode was still present after using Linn Space Optimisation and a DSPeaker Anti Mode, both of which focus on frequencies below 200Hz. It was driving me a bit mad and probably caused some unnecessary system changes. Since buying a umik and measuring the room with REW, it was clear there was a distinct peak at around 750hz. When corrected using the RME or plugin, the pressure effect was gone, trumpets and violins are tamed, and my system has never sounded better. Measuring after correction reveals a relatively close adherence to the house curve created in REW. J
  15. jas0_0


    Actually I just realised I already do this - sorry I misunderstood you on first reading. Though I have to admit I only did it because I preferred the slightly less clinical sound of RME in NOS mode, not because of reasoning that I’d already done filtering upstream!